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Welcome to the Zappa-Stewart Superabsorbent Blog

Fisheyes in Your Ice Packs?

Superabsorbent polymer (SAP) is commonly used in the manufacturing of ice packs used in the shipping of frozen and refrigerated food packaging.

SAP conglomerates, known as fisheyes, nodules, or gel balls, are common problems in ice pack production. 

Fisheyes are denoted as globs or conglomerates of SAP gellant that do not readily hydrate when combined with water.

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Topics: superabsorbent polymers, SAPs for consumer products, SAP Applications, Fisheye, Icepacks

Surface Cross Linking of Superabsorbent Polymers – What’s the Purpose?

Zappa Stewart supplies a wide range of SuperAbsorbent Polymers (SAPs). Most SAPs are surface cross linked (referred to as SXM) and are widely used in diapers and hygiene products. However, there are also non-surface cross linked SAP’s (often referred to as pre-surface crosslinked or PSXM for short) that have unique properties and are well suited for specific applications.

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Topics: superabsorbent polymers, SAPs for consumer products, SXM, pre-surface crosslinked, Surface Cross Linking, PSXM, Sodium polyacrylate superabsorbent polymers, PSXM SAP technology

Absorbent Pads:  Keeping Your Meat Safe & Delicious With Superabsorbent Polymers

Have you ever wondered how those thin pads under your ribeye steak absorb and hold so much liquid?  Yet a similar size paper towel can only absorb a fraction of the same volume and releases the liquid when any pressure is applied.  

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Topics: superabsorbent polymers, meat tray, dali tray, SAPs for consumer products, SAP Applications