Petrolatum containing hot melt bottle labeling adhesive

A technology of hot melt adhesive and petrolatum, applied in the direction of wax adhesive, rosin adhesive, adhesive, etc., can solve the problems of adhesive creep, labeling failure, etc., and achieve the effect of increasing creep resistance

Inactive Publication Date: 2014-07-23
BOSTIK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The greater tensile strength of these labels resists stretching, causing the existing adhesive to creep, resulting in labeling failure (leading and trailing edges of the label separating)
Also, some plastic film labels are prone to oil migration from the adhesive to the label

Method used

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  • Petrolatum containing hot melt bottle labeling adhesive
  • Petrolatum containing hot melt bottle labeling adhesive
  • Petrolatum containing hot melt bottle labeling adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] It has been found that the use of petrolatum in hot melt adhesive bottle labeling formulations increases creep resistance without sacrificing adhesion to plastic film substrates. In addition, petrolatum-containing adhesives do not exhibit oil migration into sensitive film stocks, thereby reducing aesthetically undesirable wrinkling.

[0014] The present invention consists of styrene block copolymer (SBC), petrolatum, polyolefin, tackifying resin and optionally waxes, plasticizers, stabilizers or other auxiliary additives. Although the examples illustrate hot melt adhesives composed of SBC and EVA polymers, it has been found that other polyolefin polymers can be used in place of EVA, including but not limited to propylene / ethylene copolymers , ethylene / α-olefin copolymers, olefin block copolymers, ethylene n-butyl acrylate copolymers, metallocene-catalyzed polyethylene and others.

[0015] Historically, liquid plasticizers, usually mineral oil, have been used in pressur...

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Abstract

A novel hot melt adhesive for bonding labels on plastic bottles is described. The adhesive comprises a blend of a styrenic block copolymer, an ethylene vinyl acetate copolymer, a tackifying resin, petrolatum and optionally a wax. The use of petrolatum instead of mineral oil provides for better elevated temperature resistance than traditional formulations.

Description

Background technique [0001] Hot melt adhesives have been used for many years to label glass and plastic bottles. Plastic bottles containing carbonated beverages are particularly challenging. After bottling, carbonated beverages will cause plastic bottles to swell. Labeling systems need to accommodate this expansion. Adhesives used to bond labels to plastic bottles also need to accommodate this expansion. [0002] Paper labels are rigid and will not expand. Typically, a hard vitreous adhesive is used to bond the paper label to the bottle. Adhesives on paper labels need to resist creep, preventing label "flagging" (the overlapping portion of the label detaching from the bottle portion). Plastic labels are flexible and will expand. Typically, softer, elastic, tacky adhesives are used on plastic film labels, which are also generally more difficult to adhere than paper labels. Adhesives used to attach plastic labels need to be tacky enough to allow the label to adhere to the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J191/06C09J153/02C09J123/08C09J193/04C09J167/08
CPCC09J123/0853C09J153/02C09J191/06C09J193/04C09J123/0815C09J123/0869C09J123/142C08L2314/06C08L23/06C08L23/0853C08L53/02
Inventor M·维特拉诺K·斯特费尔R·马加德
Owner BOSTIK INC
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