Henkel IP Holding Gmbh

Henkel Ag & Company, Kgaa

National Starch and Chemical Investment Holding Corporation

Darshak R Desai

Yuhong Hu

Charles Willard Paul

Jinyu Chen

Salvador Alvarado

Matthew L Sharak

Dale L Haner

Justin A Mehaffy

Lie-Zhong Gong

Jennifer Thatcher

Melissa L Allen

Ken Gaspar

Ed Hantwerker

Tuyet Le

The sprayable olefin-based hot melt adhesive and absorbent articles comprising the adhesive are disclosed. The sprayable olefin-based hot melt adhesive is particularly suitable for spraying at low application temperatures. The sprayable low application temperature hot melt adhesives have high green strength, excellent bond strength and aging performance. Moreover, the sprayable low application temperature hot melt adhesives allows for thin bond lines without bleed-through and burn-through risks for heat-sensitive substrates.

Hot melt adhesive composition and use thereof

Propylene polymer based packaging films for encapsulating hot melt adhesives are disclosed. The packaging films are readily miscible with the various hot melt adhesive chemistries during the melting stage without deleteriously affecting the adhesive properties, making the packaging film particularly well suited for packaging hot melt adhesives in a pillow, cylinder, pouch, block, cartridge and like forms.

Integral hot melt adhesive packaging films and use thereof

Adhesives, methods to bond substrates together with the adhesives, and articles of manufacture comprising the adhesives are described. It has been discovered that an adhesive with a polymer content greater than 70 weight percent can be formulated with a blend of (i) a metallocene catalyzed polypropylene polymer that has a density range of about 0.70 to about 0.91 g/cmand a melt viscosity less than 50,000 cP at 190&#xb0; C. and (ii) a Ziegler-Natta catalyzed amorphous polybutene and/or polypropylene copolymer. Such adhesives have high creep resistance making them particularly well suited for disposable personal care garments.

Adhesives and use thereof

It has been discovered that amorphous polybutene copolymers that have a softening point of from about 70 to about 105&#xb0; C. and viscosity of less than about 1,900 cP at 190&#xb0; C. possesses desirable properties and may be used to make a low application temperature hot melt adhesive for disposable absorbent articles.

Low application temperature amorphous poly-a-olefin adhesive

The present invention relates to a process for producing free-flowing, agglomeration resistant amorphous poly-alpha-olefin based adhesive pellets. The process includes (a) extruding the adhesive through an orifice of a die plate immersed in a cooling fluid; (b) cutting the adhesive into a plurality of pellets in the cooling fluid; (c) solidifying the pellets at a temperature range of about 25&#xb0; C. to about 40&#xb0; C. for at least 30 minutes; and (d) separating the pellets from the recrystallization fluid and drying the pellets. The pellets harden at least three folds faster than conventionally formed pellets.

Process for preparing flowable amorphous poly-alpha olefin adhesive pellets

Low application temperature amorphous poly-&#x3b1;-olefin adhesive

Low application tempearature amorphous poly-&#x3b1;-olefin adhesive

A hot melt adhesive based on ethylene-2-ethylhexyl acrylate copolymer finds use in packaging applications where high heat resistance, as well as good cold tolerance, is required.

Hot melt adhesive

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Edison, NJ, United States of America

Darshak R Desai