| APPLICATOR
CAP - A closure with attached applicator to apply the contents
of the container. |
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| BACKING
LINER - The compressible paper material, usually pulp or news
board, to which the facing liner is attached or adhered. This compressible
paper material compensates for any irregularities on the sealing surface. |
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| BAKELITE
- A trade name applied to synthetic resin. Its uses are similar
to those of hard rubber and celluloid. |
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| BEAD
- Either a depressed or raised circular (ring) configuration in
the top of the cap. May be a full radius, or in some constructions
a flat circular channel. |
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| BEADED
CAP - A cap having a construction featuring a bead of some design
in its panel or top surface. |
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| CELLULOSE
BAND (CELON) - A band made of hydrated cellulose film that is
extruded in continuous tubing form. The cellulose tubing is then processed
and printed in this form and cut into individual bands of predetermined
lengths. When the Celon is applied to the finished of the container,
it is allowed to air dry. During this air-drying period it shrinks
to form a skin-tight film over the finish of the bottle. |
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| CEL-O-SEAL
- The tamper-proof plastic neckband covering container neck and
closure skirt. Can be printed with a sales message. |
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| CHANNEL
- A depressed configuration in the top of the cap added for strength,
stacking purposes, retainer for Plastisol, etc. The sides are sloping
or of a radius construction, and the depressed section is flat. |
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CHILD-RESISTANT CLOSURES (CRC) - There are several types
that have been developed for products that constitute a hazard to
small children. Basic principles of CRC's are (1) press-turn; (2)
squeeze-turn; (3) combination-lock and hidden tab.
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CHUCKS - Component of a capping machine that holds the closure
for application to the container.
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| CLOSURE
- Any structure or device that is designed to close off the opening
of a container and prevent loss of its contents. |
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| COATING
- A layer of varnish, inks or other organic material that has been
applied in fluid form and dried, united with or adhered to the surface
of the metal from which the closure will be made. |
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| COMPO
- A flowed latex compound or ground cork particles adhered and
used as a liner in a closure. |
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| CONTINUOUS
THREAD (CT) - A continuous spiral-projecting glass, plastic or
metal ridge on the finish of a container intended to mesh with the
thread of a screw-type closure. |
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| CORK
- The light, tough bark of the cork oak tree used as a compo or
plug fashioned for a closure or its liner. |
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| CROWN
CAP - This is a crimped closure. Flutes are pressed into the flaring
skirt of a shallow metal disk, which holds an inner disk of resilient
lining material that forms the actual seal. |
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| CROWN
FINISH - The finish used on beer and beverage bottles sealed with
a crown cap. |
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| CURL
- Tubular structure formed at the open end of a metal closure
to provide a smooth, strong edge and to facilitate automatic handling
of the closure. |
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| DEEP
SCREW CAP - A cap having a deeper skirt (more "H") and generally
a heavier thread than the 400 finish series. |
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| DOME
- A closure that has a rounded top surface. |
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| DROPPER
CAP - A container closure that includes a dropper with a rubber
bulb. |
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| "E"
DIMENSION - On a threaded bottle neck (finish), it is the outside
diameter of the neck; the diameter of the neck (finish) measured across
the root of the threads. |
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| EFFECTIVE
THREADS - The amount of thread (turns) in a closure that is actually
in contact with the bottle thread, when the closure is fully tightened
on the bottle neck (finish). |
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| EMBOSSING
& DEBOSSING - Embossing creates a design on the closure surface
by raising the letters through pressure or dies. Debossing is lowering
portions of the surface in a like manner. |
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| FACING
LINER - The liner material that is attached or adhered to the
backing liner and acts as a barrier to any chemical reaction of the
product. |
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| FITMENTS
- Any additional or extended part of a container such as a bail,
handles, nozzle, flange, plug, etc. |
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| FLANGE
- The part of the stamped shell used to form the wire. The right
angle extension of the skirt at the open end of the shell. |
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| FLAT
TOP - A cap or shell in which the top surface is relatively flat
and without any embossing on the surface. |
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| FLOATING
LINER - A liner that is not adhered to the inside of the closure. |
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| FLOWED-IN
- Term used to describe method of applying fluid sealing compounds
with a nozzle. |
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| FRICTION
CAP - A closure designed to be held on by friction upon application
to container, building up resistance to movement of closure. |
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| GPI
- Glass Packaging Institute. An organization of almost all glass
container producers that establishes policies such as standardization
and develops industry-advertising programs. |
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| GASKET
- A liner applied between adjoining parts to effect a tight seal. |
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| "H"
DIMENSION - The height of the bottle finish, measured from the
sealing surface, in a line parallel to the axis of the finish and
tangent to the threads on the finish, down to a point where the line
intersects the body (shoulder) of the container. Also, the inside
height of the closure, measured from the bottom of the closure, in
a line tangent to the threads of the closure and terminating at the
inside, top of closure. |
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| HEAT
SEAL - A process of uniting two or more surfaces by fusion, either
of the coatings or of the base materials, under controlled conditions
of time, temperature, and pressure. |
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| HOT
STAMP - The application of heat and pressure to die molds to fabricate
or decorate a molded product. |
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| "I"
DIMENSION - A specified minimum diameter inside the bottleneck.
A minimum diameter is specified that will allow sufficient clearance
for filling tubes to enter the bottleneck easily. |
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| "I.D."
- Abbreviation of Inside Diameter. |
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| INNER
SEAL - An extra seal comprising a sheet that is resistant to water
vapor or vapor from some specific chemical, and adhered to the top
end of a container below the regular cover or closure, to give added
protection to the contents. |
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| INTERNAL
THREAD - Threads on the interior of a closure. |
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| INTERRUPTED
THREAD - Threads on the finish of glass containers that are not
continuous. |
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| KNURL
- Indented or crimped portion of the skirt at top of cap used
for holding liner in cap, used as a grip for applying cap and also
for a better hold or grip for removing. |
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| "L"
DIMENSION - Vertical distance from sealing surface to top part
of neck bead, i.e., where uppermost part of bead intersects container
neck. |
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| LACQUER
- A liquid coating used in the manufacturing of closures that dries
through evaporation in the baking operation. |
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| LINER
- A material inserted inside the cap to form the seal and prevent
evaporation or leakage of container contents. |
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| LINER
BACKING - The special material usually bonded to paper or foil
that forms the cushion for sealing the enclosed product. |
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| LINER
DISC - The blanked circular liner from the appropriate liner material,
either paper, plastic or rubber. |
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| LINERLESS
CLOSURE - A closure, usually plastic, that contains no liner. |
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| LUG
CAP - A closure with raised internal impressions that intermesh
with identical threads on the finish of a container. |
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| "METAL"
-Term commonly applied to steel or aluminum strip stock material. |
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| MOLD
- A preshaped cavity in which material is shaped by pressure, heat
or some other process. |
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| MOLDING
(COMPRESSION) - A process of shaping or forming material in molds
with heat and pressure. |
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| MOLDING
(INJECTION) - A method of forming plastic objects from granular
or powdered plastics by fusing the plastic in a chamber with heat
and pressure and then forcing part of the mass into a cooler chamber
where it solidifies. This method is commonly used to form objects
from thermoplastics. |
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| MOUTH
- The open end of the cap opposite the top. |
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| NECK
- The part of a container where the shoulder cross-section area
decreases to form the finish. |
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| NONTHREADED
- Designates those items that do not require threading action
when applied to glass or plastic containers such as snap caps, sifter
fitments, pourout fitments, etc. |
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| "O.D"
- Abbreviation for Outside Diameter. |
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| OVERSEAL
- An additional closure that tamper-proofs the primary closure,
usually of foil, aluminum or plastic. |
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| PHENOL-FORMALDEHYDE
- A phenolic resin compound used to manufacture thermosetting molded
closures. |
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| PIPETTE
- The glass or plastic tube portion of a medicinal dropper closure. |
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PLASTISOL - A liquid mixture of resins and plasticizers
that is solidified with the application of heat.
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| POLYETHYLENE
- A synthetic made from polymerized ethylene gas under pressure. |
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| POLYETHYLENE
PLUG - A fitment used for closing or narrowing the opening in
the finish of a container. |
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| POLYETHYLENE
SLEEVE - A fitment used in conjunction with a glass stopper. |
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| POLYETHYLENE
SNAP CAP - A polyethylene plastic cap designed to hold securely
to a particular glass container finish that can be released with a
snap of the finger. |
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| POLYPROPYLENE
- A synthetic made from polymerized propylene gas. |
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| POLYSTYRENE
- A thermoplastic material synthesized from benzene. |
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| POUROUT
FITMENT - A plastic component of a glass or metal package, designed
to improve the dispensing action of liquid products. Snaps over glass
bead or inside can neck, with screw cap applied over the fitment. |
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| "S"
DIMENSION - Locates the position of the bottle thread with respect
to the sealing surface. It is the vertical distance from the sealing
surface to the intersection of the finish wall and the top part of
the first part of the bottle thread where full depth contour exists. |
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| SEALING
SURFACE - The portion of the finish that makes contact with the
sealing gasket or liner and forms a seal. |
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| SHELL
- A hat-shaped and preliminary form of closure prior to being threaded
and knurled. |
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| SIFTER
FITMENT - A plastic component of a package designed to allow shaking
out of dry products, as with table salt shaker. Snaps over glass bead,
with metal or plastic cap applied over the fitment. |
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| SIDEWALL
OF CLOSURE - That portion of the closure between the rolled edge
and top of the closure skirt. |
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| SKIRT
OF CAP - The vertical part of a closure below the shoulder. |
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| SPOT
CROWN - A cork-lined crown cap having a smaller disc of aluminum
foil or plastic film, centrally located on the cork liner. |
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| SPOUT
CAP - A closure designed to facilitate pouring the contents of
the container. |
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| STACKER
CAP - A closure designed specifically to nest with the bottom
plate of a container to facilitate the stacking of filled containers
on top of each other. |
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| STOPPER
- A solid glass, cork-shaped, ground-to-fit plug used to seal
some bottles. |
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"T" DIMENSION - The outside diameter of the thread helix
on a bottle finish.
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| TACSEAL
- A form of liner usually of glassine that is applied over and bonded
to a waxed under-liner. When cap is removed from glass, this Tacseal
liner adheres to the glass lip as a security type liner. |
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| THREAD
- The intended curved formed section of the cap on the skirt that
engages and matches the thread of the glass for screw-fit purposes. |
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| THREAD
CONTACT - The actual physical contact that the thread of the cap
makes when it engages the bottle thread finish. |
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| TOP
- The top panel of the shell opposite the open or flange end. |
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| TOP
SEAL - A closure where the sealing surface is located on the container
finish. |
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| TOLERANCE
- A specified allowance for deviations from standard dimensions
or specifications. |
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| TORQUE
- The amount of circular force applied to a container to seal or open
it. |
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| UREA-FORMALDEHYDE
- A thermosetting compound used to fabricate light-colored plastic
closures. |
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| VALVE
CAP - A closure that includes a valve to regulate the flow of
the product from the container. |
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| VINYL
- A resin compound usually applied to white paper used in the
manufacturing of liners. May also be used in coatings on the metal. |
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| WIRE
- Curled edge of closure also referred to as "curl" or "rolled
edge". |