Technical Manual

Table of Contents

Technical Manual

This technical manual has been prepared to assist in the understanding and use of the dispensing closures manufactured by Seaquist Closures. Included in this manual is basic information on dispensing closure design, function, materials, specifications, product compatibility, application, and other information that should be taken into consideration when making packaging and closure decisions. This manual is intended to answer general and frequently asked questions. For complete details about specific closures, designs, and applications please consult the experts at Seaquist Closures. The information on these pages is offered in good faith by Seaquist Closures. Seaquist Closures makes no warranty of any type, expressed or implied, regarding any information set forth in this manual. Always consult the experts at Seaquist Closures for your specific

requirements.

1 of 37

Table of Contents

1.0 Closure types 1.1 Snap Top? Closures 1.2 Disc Top? Closures 1.3 Double Wall Closures 1.4 Closures with Valves

page 3 page 4 page 6 page 7

2.0 Critical Dimensions 2.1 Threaded Closures 2.2 Threaded Bottles 2.3 Snap-on Closures 2.4 Snap-on Bottles

page 9 page 10 page 11 page 12

3.0 Orientation of Threaded Closure page 13

4.0 Closure Thread Profiles

page 15

5.0 Closure to Bottle Seal Systems 5.1 Crab Claw Seal 5.2 Flat Seal 5.3 Plug Seal 5.4 V-seal

page 16 page 17 page 18 page 19

6.0 Closure Orifice Seals 6.1 Collar seal 6.2 Spud and Orifice

page 20 page 21

7.0 Biased Hinges 7.1 Butterfly Hinges and Dual Axis Hinges 7.2 Strap Hinges

page 22 page 23

8.0 Opening Force 8.1 Latch Beads

page 24 page 25

9.0 Application Torque

page 26

10.0 Plastic Materials

page 27

11.0 Plastic Additives 11.1 Anti-stat 11.2 Colorant

page 28 page 29

12.0 Product & Chemical Compatibility page 30

13.0 Liners and Inner Seals

page 31

14.0 Glossary of Terms

page 32

Technical Manual

2 of 37

1.1 Snap Top? Closures

Table of Contents

A Snap Top closure is composed of a body and a lid connected by a hinge. Typically the hinge is a biased hinge. Snap Top closures can be produced in a wide variety of shapes, sizes, and orifice sizes, with threaded or snap-on finishes. Snap Top dispensing closures can be used for many types of high and low viscosity products. Usually the lid contains a spud or seal collar that coordinates with the spout/orifice to cause a seal when the lid is closed.

Orifice

Spud Hinge

Lid Deck

Spout

Front View - Closed

Back View - Closed

Finger Recess

Snap Top Common Features

Body

Section View : Open

Technical Manual

Section View : Closed

3 of 37

1.2 Disc Top? Closures

Disc Top closures are two piece dispensing closures which open by pressing the actuator at the finger recess. Disc Tops come in a variety of shapes, thread finishes, surface finishes, and sizes. This type of closure is suitable for a wide variety of product applications, although they are not recommended for use with very low viscosity (very thin) products.

Orifice

Force applied to open

Finger Recess

Spout

Table of Contents

Actuator

Pivot (2)

Assembled and open

Assembled and closed

Technical Manual

Body

4 of 37

Next

1.2 Disc Top? Closures

The flow path of product through a Disc Top closure is illustrated below...

Flow Path

Force applied to open closure

Table of Contents

Section View: Open

Section View: Closed

Orifice seal occurs here

Technical Manual

5 of 37

 ................
................

In order to avoid copyright disputes, this page is only a partial summary.

Google Online Preview   Download