Laminate Tube Having a Resilent Copolymer Coating

a copolymer coating and laminate tube technology, applied in the field of laminate tube having a resilent copolymer coating, can solve the problems of reducing the volume of oils embodied in most dentifrices, affecting the taste of dentifrices, and certain products after a time that have been noted to deteriorate,

Inactive Publication Date: 2013-10-03
COLGATE PALMOLIVE CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0016]wherein the outer layer comprises an outer layer polymer and a block copolymer effective to

Problems solved by technology

However, certain products after a time have been noted to deteriorate when contained in dispensers made entirely of plastic.
This results in the flavor oils embodied in most dentifrices being reduced in volume during storage, rendering the dentifrice less palatable.
However, it has been found that certain laminates do not po

Method used

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  • Laminate Tube Having a Resilent Copolymer Coating
  • Laminate Tube Having a Resilent Copolymer Coating
  • Laminate Tube Having a Resilent Copolymer Coating

Examples

Experimental program
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Effect test

example 1

[0070]A three-layer film with a total thickness of 120 microns was blown according to the outer film structure (24 / 26 / 28) shown in Table 2.

[0071]Impact resistance testing showed that the impact resistance of this film was 376 g. (All impact resistance values referenced herein are measured and defined in accordance with Chinese State Standard GB 9639-88: “Impact Resistance Test of Plastic Film and Sheet”, which is equivalent to ISO 7765-85.)

example 2

[0076]A one-layer film with a total thickness of 120 microns was blown according to the outer film structure (20) shown in Table 1. The film had an impact resistance of 182 g, 20% greater than the film of Comparative Example 1.

[0077]Thus, the invention provides films, laminates and dispensers with enhanced impact resistance. In certain embodiments, a laminate (or film) of the invention having a thickness of 120 microns has an impact resistance greater than 152 g or greater than 160 g or greater than 180 g or greater than 200 g or greater than 300 g or greater than 375 g. In certain of these embodiments, the 120 μm laminate (or film) of the invention has an impact resistance less than 1000 g or less than 750 g or less than 500 g, and preferably has an impact resistance of 180-400 g. In certain embodiments, a laminate (or film) of the invention has an impact resistance at least 5% or at least 10% or at least 20% or at least 50% greater than a reference structure. As used herein, the t...

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Abstract

A dispenser for storing and dispensing a substance, includes: (a) an inner layer including an inner layer polymer; (b) outer layer; (c) a metal foil barrier layer between the inner layer and the outer layer; (d) a compartment for storing the substance; and (e) a resealable opening, wherein the outer layer includes an outer layer polymer and a block copolymer effective to provide the outer layer with an impact resistance at least 5% greater than a reference structure. The inner layer polymer is preferably LDPE, the outer layer polymer is preferably a blend of LDPE, HDPE and block copolymer or alternatively the outer layer is subdivided into layers of LDPE, HDPE and block-copolymer, in this order. The block copolymer is preferably an SBS block copolymer having thermoplastic elastomer properties. The dispenser is particularly well-suited for dispensing toothpaste.

Description

[0001]The present invention relates broadly to dispensers formed from laminates of polymers and foil, and more specifically to collapsible dispensers particularly suited to contain and dispense pastes, gels and creams.[0002]Dispenser tubes formed of metallic and plastic materials have long been known in the packaging field. Metal dispenser tubes require a coating to prevent attack and corrosion of the metal by alkaline or acid contents of the tube and contamination of the contents by the reaction products.[0003]Tubes formed of polyethylene and other plastic materials have enjoyed wide commercial success in the packaging of many products. These are both single-layer and multi-layer tubes. For example, U.S. Pat. App. Pub. No. 2007 / 0272711 A1 discloses elastically deformable dispensers comprising thermoplastic elastomers, such as styrene-ethylene-butadiene-styrene block copolymers.[0004]However, certain products after a time have been noted to deteriorate when contained in dispensers m...

Claims

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Application Information

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IPC IPC(8): B32B15/08B65D35/10
CPCB32B15/08Y10T428/1359B32B15/20B32B27/08B32B27/16B32B27/302B32B27/32B32B2255/10B32B2255/26B32B2270/00B32B2274/00B32B2307/558B32B2311/24B32B2439/40B65D35/02B65D35/08B65D35/10B32B15/085
Inventor WANG, JUNLI, BOB
Owner COLGATE PALMOLIVE CO
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