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Difference Between Quality Frames

What Distinguishes Injection Molded Frames from Acetate Frame?

In choosing an eyeglass frame, certain qualities are usually examined to determine the best fit for the wearer, or the compatibility with lenses. These factors include durability, flexibility and cost.

So, what’s the difference in quality frames? This article will place emphasis on the distinction between injection molded frames and acetate or plastic frames. The frame materials, their pros and cons, and also the adjustments typically made to counteract their downfalls will also be examined.

Eyewear frames have come a long way since their inception. Today, they are made from varied materials, using tried and true methods or newer, more faster techniques. Let’s take a look:

About Acetate Eye Glass Frames

Acetate eye glass frames are essentially plastic. They are otherwise known as a material called zyl, which is one of the most popular types of frame materials in the eye frame industry.

Manufacturing Methods for Acetate Frames Involve:

  • The technique involves forming layers of plastic into a large block of acetate
  • Different parts of the eyeglass frame are then cut from this large block of cellulose acetate sheet
  • After this careful slicing, individual parts are then hand polished and assembled into a whole frame
  • The machine used to slice these large blocks of acetate or zyl, is called a pantographing machine
  • Block acetate sheet sizes range between 3 feet (0.91 m) in length, and are typically 0.33 in (0.84 cm) thick

Acetate originates from natural cotton fibers and tree pulp, which give the frames a more natural feel. These constituents also make for a very flexible frame. In eyewear manufacturing spheres, acetate frames are said to be included in all colors of the rainbow.

This ease of color variations has also lent the frame material to be an easy-to-make fashion statement, as manufacturers and partnering designers are able to shape, add or subtract different pieces, in order to create different looks.

Pros of Acetate Frames:

  • Acetate frames are derived from renewable resources
  • Acetate is non-petroleum based
  • Acetate is extremely lightweight
  • The material is also hypoallergenic
  • This frame type is extremely flexible
  • Acetate exceeds injection molded frames in terms of durability
  • Acetate frames can be made in hundreds of color variations

Cons of Acetate Frames:

  • It is more expensive than injection molded frames
  • Acetate frames melt easily in extreme heat
  • Color changes to a milky white in high temperatures

Injection Molded Frames:

Injection molded frames on the other hand, are made likewise from plastic, however with a different method.

Manufacturing Methods for Injection Molded Frames Involve:

  • The technique involves liquefying plastic into mold
  • This mold then cools and solidifies into the frame
  • The machine used in this process are similarly called injection molding machines
  • Colors are added on some of these frames through spray painting, and are further coated

Pros of Injection Molded Frames

  • Injection molded frames are more flexible, and can be bent without much damage
  • The method involves less waste, since molding only uses necessary materials, while block acetate discards unused parts around the cut
  • Less waste allows injection molded frames to be less costly than acetate frames

Cons of Injection Molded Frames

  • Injection molded frames look cheap and less of an organic feel
  • These materials can hold hidden defects from the injection process
  • Cheaper parts used to keep costs down can break easier

The Parts of an Eye Glass Frame:

  • Frame front
  • Eye wire
  • Bridge
  • End pieces
  • Hinges
  • Temples
  • Nose pads
  • Pad arms
  • Top bar
  • Temple tips
  • Rimless frames
  • Semi-rimless frames
  • Rimlon
  • Nose pads
  • Key-hole bridge
  • Drill mount
  • Saddle bridge

Distinctive Frames Materials:

Buffalo Horn Frames – Buffalo horn is one of the oldest types of eye glass frames. It is made from the horn of the African Water Buffalo. One of the biggest appeal for these frames is that they warm to the body’s temperature. The feel factor is also a huge plus for luxury eyeglass wearers.

Buffalo horn frames are more expensive than other frame materials. In addition, they are very difficult to adjust – an optician will have to be extremely careful when adjusting these frames.

Wooden Frames – As the name suggests, these are made from wood, which add a distinctive beauty to the entire eye glass frame. Different types of hardwoods can be used including pine, walnut, oak, and countless others to play with color and texture, even though they’ll be sanded and polished.

Other unique frame materials include bone, carbon fiber, precious metals , precious stones, and leather. These materials have all been used to design or makeup an entire eyeglass frame. Though rare, these can be obtained from specialty makers.

More Eyeglass Frame Materials Include:

  • Monel Eyeglass Frames – made with portions of copper and nickel
  • Titanium Eyeglass Frames – Newer frames that are lightweight and rust-resistant
  • Stainless Steel Eyeglass Frames – Made with mainly iron, which makes it sturdy and corrosion-proof
  • Nickel Silver Eyeglass Frames – Made from zinc, copper and nickel

Considerations when choosing eyeglass frames include:

  • Does this wearer have an allergy to certain materials? If this is the case, then selections will be restricted to frame materials that are hypoallergenic.
  • What’s the lifestyle of the wearer? This will affect choices in terms of price, quality and durability of the eyeglass frame material.
  • What’s the face shape of the wearer? A persons face, whether oval, rectangular, square or another form, will usually determine what type of eyeglass frame is chosen.

Selections are endless when it comes to eyeglass frames. There are rimless, semi-rimless or full-rim frame varieties. Frames reflect an individual’s personal style, and consumers are now able to pick and choose between specs that are traditional, retro, or modern, based on their own tastes.

Most frames will undergo quality control testing to ensure that value and comfort is retained by the wearer. Also, the reputation of the manufacturer will be at stake, as teams of designers and producers are usually hired, regardless of the material or production method.