Screen Printing (Serigraphy)

Screen printing is a printing process in which we use a mesh for ink transfer over substrate by using stencil. In Stencil, areas are made permeable so ink can pass and form an image, and areas made impermeable blocks the ink, hence forming a non-image area.

A squeegee is is moved across (from top to bottom direction of stencil) screen to fill and open mesh apertures with ink, then a reverse stroke is made which causes screen to touch substrate momentarily along the line of contact. This makes ink to wet the substrate and is pulled out of mesh apertures as screen springs back after blade has passed. One color is printed at one time, so multiple screens can be used to produce a multicoloured image, graphic or design.

There are many terms used, which is essentially same technique. Traditionally, this process was known as screen printing or silk-screen printing, because silk was used in process. It's also called as serigraphy and serigraph printing.

At present, synthetic threads are used commonly in the screen printing process. The most popular mesh in common use is made out of polyester. There are many special-use mesh's materials of nylon as well as stainless steel available to the screen printer. Also there are different mesh size types which determines look and outcome of finished design over the material.

(image source: wikipedia)

Comments

The Innovations that shaped packaging over past 200 years

|| The packaging is a silent salesman. The packaging is responsible for creating the first impression to the customers. This packaging we see today has evolved from being only as a intended use to a tool for communicating and branding. || The packaging we see today revolves around branding, communication and consumer promotion and goes beyond above normal functions such as contain, caring and preservation. Today's packaging also plays a major role in ease of consumers use mechanisms such as simple dispensing systems like bottle opener in beer bottles, child resistant closures etc. Let’s take a look at "The Innovations that shaped packaging over past 200 years" Video Source:

Polymers in Packaging: Polypropylene(PP)

Polypropylene(PP) is the lowest density commodity thermoplastic polymer which is both tough and durable. Polypropylene has a very slippery surface and good resistance to fatigue, thus an ideal material for most plastic living hinges, as in flip-top bottles caps (Tic Tacs) and sanitizers. Know about PP at a snapshot. # plastic hashtag # packaging hashtag # pp hashtag # sanitizers hashtag # living hashtag # polymer hashtag # fatigue hashtag # commodity hashtag # packagingdesign hashtag # plastics hashtag # ecofriendly hashtag # foodpackaging hashtag # packagingsolutions hashtag # polypropylene hashtag # bottles hashtag # custompackaging

The Famous Polymers used in Packaging

These are recycling symbols of famous polymers used in packaging. "Every polymer tells a certain story and we at Passionate Packaging Engineer try to discover them" The Famous Polymers used in Packaging are: #1 - Polyethylene Terephthalate(PET) #2 - High-density polyethylene (HDPE) #3 - Polyvinyl chloride (PVC) #4 - Low-density polyethylene (LDPE) #5 - Polypropylene(PP) #6 - Polystyrene(PS) #7 - Poly-carbonate and others

Passionate Packaging Engineer

Search This Blog