Astro Adhesives

Astro Packaging offers a wide range of water-based adhesives for many applications in the adhesives industry. For decades, customers have come to us to fulfill their water-based adhesive product needs. Our unique strength comes from our custom adhesive formulation technology and our novel emulsion polymer technology. We use both natural and synthetic raw materials and the latest technology available to create products that satisfy our customers' needs. Our global commercial, technical and manufacturing footprint enables us to deliver products tailored to the needs of every region of the world.
 
 
No matter what type of in-house labeling adhesive you need, Astro Packaging has a high-performing adhesive to handle it. Our adhesive for roll-through can labelers has been the industry standard for years. Our adhesives support a variety of speeds for both rotary and in-line labelers. We also offer pressure-sensitive and non-pressure-sensitive options for moderate and extremely high-speed swirl spray adhesive applications. Our water-based products are designed to reduce flagging while simplifying cleanup. And, Astro Packaging’s hot melt adhesives create strong adhesion for a variety of applications and line speeds from 100 bpm through 1000+ bpm.

Astro Packaging products provide a high quality and cost effective solution with various technologies such as synthetic dispersion, PVAC, PVOH, natural rubber, acrylics and cellulose water-based products. Excellent bonds are attained in such applications as paper converting, envelopes, graphic arts, tissue and towel, tapes, labels and coatings, end of line business, filter assembly and industrial laminating.
 
From industrial adhesives that are used in paper packaging, converting, laminating, labeling and hygiene markets to emulsion polymers used as building blocks for innovative products, our water-based adhesives serve a diverse range of markets. The adhesive product lines demonstrate the use of this unique combination to offer innovative solutions. Our emulsion polymers are found in woodworking adhesives, paper and filter manufacturing, caulks and sealants, mortar and grout additives, paints and coatings and pressure-sensitive adhesives. 
 
With cutting-edge knowledge about labeling, we serve as expert problem solvers. We understand how to optimize adhesive use in today’s production lines. With an extensive range of product technologies, we can match the needs of your specific production line to the product that will maximize efficiencies and results. Our comprehensive product range covers a large number of special adhesives for all requirements and applications in rotary offset, gravure and newspaper printing. Together with suitable application systems, Astro Packaging products ensure reliable bonding on surfaces of all kinds. Whatever the type of paper, Astro Packaging has the high-quality product you need.

WATER-BASED ADHESIVES

What Are the Different Types of Water Based Adhesive?

Water based adhesive glue that is categorized in one of the following four categories: vegetable glues, resin cements, animal or protein glues, and latex cements. Each of the different types has its own characteristics. Depending on the formulation, the adhesive can result in a hard resin finish or a tacky filmy finish. In general, a water based adhesive is solvent free, making it safe to use in close quarters and areas that may not be well ventilated, such as classrooms. The most popular water based adhesive is white glue or wood glue.

Vegetable glue is a common type of water based adhesive. These glues have a starch base and a brittle finish. Commonly used to bind books, this water based adhesive has a brown color and a reputation as a durable, long-term bond for paper. The vegetable based adhesive is more likely to break down when exposed to water.

Another water based adhesive is resin cement. Resin cements are emulsions, mixes of liquids that cannot be blended. With resin cements, polymers such as ethelyne vinyl acetate (EVA) or polyvinyl acetate (PVA) are emulsified and placed in water, which acts as a carrier. While resin cements are white when wet, they dry clear and are relatively flexible. Resin cements are useful for bonding some plastics, paper, and wood.

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Waterbased Adhesives Technology Review
As part of an overall project to provide industry representatives, researchers, technical assistance providers, research funders, and others with better access to information on pollution prevention research, the Pacific Northwest Pollution Prevention Resource Center (PPRC) undertook literature reviews on alternative solvent-free adhesive technologies that have the potential to replace conventional ozone-depleting and solvent-based adhesive systems. A set of three technology reviews covering hot melt adhesives, radiant-cure adhesives, and waterbased adhesives was prepared from the literature research.

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Water-based (or more commonly referred to as waterborne) adhesives are typically formulated from either:
  1. Natural Polymers – from vegetable sources (e.g. dextrins, starches), protein sources (e.g. casein, blood, fish, soybean, milk albumen), and animal (e.g. hides, bones), or
  2. Soluble Synthetic Polymers – from polymers including: polyvinyl alcohol, cellulose ethers, methylcellulose, carboxymethylcellulose, and polyvinylpyrrolidone
These adhesives may be supplied as solutions or formulated as dry powders which must be mixed with water prior to application. The strength of the adhesive is attained when water is lost from the glue line by evaporation or absorption by the substrate. Because of this requirement, use of these adhesives requires that at least one substrate is permeable. Where neither substrate is permeable, it is possible to apply a thin coat of adhesive, allow it to dry, and then activate the adhesive by lightly wiping with a wet brush or roller or spraying with water. This gives the system “quick tack” and the amount of water in the glue line is so small that a porous substrate is not required. Because the polymers are water soluble, bonds made using these adhesives have limited resistance to moisture and water. Some plant glues and the casein glues have the special feature that the base raw materials are insoluble in room temperature water and have to be dissolved in alkaline media (sodium hydroxide solution or ammonia). These adhesives have improved moisture resistance compared to adhesives that are directly soluble in water. Many water-based solution adhesives are perishable and so extended storage is not possible.
 
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APPLICATIONS

  • Glutin Adhesives
  • Skin Adhesives
  • Fish Adhesive
  • Starch Adhesive
  • Methyl Cellulose
  • Casein Adhesive
  • PVAc Adhesives
  • APPLICATIONS
  • Bottle Labelling
  • Bonding Paper, Cardboard, Wood, Base Material for Moisture-Activated Bonding
  • Gummed Adhesive Strips
  • Wallpaper Paste

TYPES

Acrylic Non-reactive - An outstanding water-based pressure sensitive adhesive suitable for bonding fibrous glass, jute, and other types of lightweight insulation to ductwork and to housings for air conditioning units and furnaces. Complies with UL® 2395 and UL® 727, and exhibits a 0/0 flame spread and smoke rating. General pressure sensitive acrylic for bonding plastics. High tack and high solids offer quick processing and adhesion to many substrates. Water-based pressure sensitive adhesive suitable for bonding fibrous glass, jute, and other types of lightweight insulation to ductwork and to housings for air conditioning units and furnaces. Tinted blue in color to allow better visual inspection and control of application.

Rubber non-reactive – It features fast grab, broad bonding range, rapid drying, and excellent resistance to moisture and heat. Meets NFPA 90A and 90B requirements. UL®-Listed for HVAC and furnace applications.

Polyurethane self-reactive – A high performance, heat reactivatable, one-component polyurethane adhesive for tough elastomeric bond applications. Light gray in color, this adhesive requires heat and pressure for application such as a vacuum press.

Polyurethane self-reactive – A high performance, heat reactivatable, one-component polyurethane adhesive for tough elastomeric bond applications. Light gray in color, this adhesive requires heat and pressure for application such as a vacuum press.

ADVANTAGES

Today’s converters may consider the environmental advantages of using Astro Packaging’s waterbased laminating adhesives when producing laminates. Waterbased products, in addition to being environmentally safe and containing zero volatile organic compounds (VOCs), offer the following advantages:
  • No solvents = no emissions concerns
  • Faster cycle time to slitting or further processing
  • Provides good green and final bonds
  • Excellent clarity on clear film laminations 
  • Used on a variety of substrates including film/film and film/metalized
  • Improved heat, chemical, water and humidity resistance