parcelscale

Polyester is the most rigid of all strapping materials. It elongates significantly less than polypropylene and retains tension over a longer period. Polyester is nick resistant and can be sealed with seals, heat or friction welds. Because polyester offers the greatest strength and highest retained tension of all plastic strapping, it is frequently used on heavy duty loads that need high initial tension along with high retained tension during handling and storage. Common applications are empty cans and bottles, lumber and heavy, rigid palletizing. Polyester has a smooth, shiny finish and is easy to dispose of and recycle.Polypropylene strapping is the most commonly used and least expensive of all strapping materials. It is light parcelscale and easy to apply and recycle. Characteristics include high elongation and elongation recovery, but low retained tension. Polypropylene is an excellent choice for light duty palletizing, unitizing, carton closing and bundling. Because of its embossing (or waffle) pattern, strap thickness is not a useful measurement. A standard 1/2" machine grade strap can be embossed to a thickness of anywhere between .014 and .030, depending upon how deep the embossing pattern is. An overly embossed strap will be thicker, but will have a lower break parcelscale strength. Carton Reinforcement: A 3:1 ratio of strap to carton weight is recommended. For a 100 lb package this could be done with (1) 300lb tensile strap or (2) 150lb straps. Unitizing and Bundling: A 5:1 ration of strap parcelscale to carton weight is recommended. Palletized Cases: Required Tensile Strength = (Pallet Weight x 1.5) / # of Straps

Packaging Tips Select a box that is strong enough to protect the contents. Leave space for cushioning inside the carton. Cushion package contents with shredded or rolled newspaper, bubble wrap, or Styrofoam peanuts. Plain air-popped popcorn is also good for cushioning; it''s inexpensive and environmentally friendly. Pack tightly to avoid shifting. Always use tape that is designed for shipping, such as pressure-sensitive tape, nylon-reinforced parcelscale kraft paper tape, or glass-reinforced pressure-sensitive tape. Do not use wrapping paper, string, masking tape, or cellophane tape. Put the delivery and return addresses on one side only of the package. Suggestion: Place a return address label inside the parcelscale package. Stuff glass and fragile hollow items, like vases, with newspaper or packing material to avoid damage due to shock. When mailing framed photographs, take the glass out of the frame and wrap it separately. Remove batteries from toys. Wrap and place them next to the toys in the mailing box. Take packages parcelscale that weigh at least 1 pound into the post office for mailing. Publication 2, Packaging for Mailing, and Publication 227, Preparing Packages for Mailing, contain more tips and are available free from your post office. Obtain Express Mail and Priority Mail boxes, envelopes, and tubesPurchase packaging products, including tape, envelopes, padded bags, boxes, mailing tubes, and cushioning material, from your post office. Some locations offer decorative boxes and expander packs that are suitable for mailing gifts. Length divided by height is less than 1.3 or more than 2.5 inches. A surcharge, in addition to the applicable postage and fees, is applied to each piece of nonstandard size mail for two reasons: it compensates the Postal Service for the added cost of manually handling nonstandard mail, and it promotes the design and use of mail that can be processed mechanically.

Carton sealing tape is available in two varieties, pressure sensitive parcelscale and water activated. Pressure sensitive tape is typically made of PVC or Polypropylene backing with acrylic, hot melt or natural rubber adhesive. Pressure sensitive tape is relatively inexpensive, provides a good bond for many carton sealing applications and is easily applied with an inexpensive tape gun. Water activated tape is constructed of kraft paper backing and sometimes includes fiberglass reinforcement. Water activated tape requires a stationary dispenser containing water to dispense parcelscale the tape and activate the adhesive, but forms a superior bond when applied to corrugated cartons. PRESSURE SENSITIVE TAPE Hot Melt Hot melt tape is also known as synthetic rubber and is typically manufactured with a polypropylene backing. Hot melt tape works well from 45-120 degrees, provides a good bond for most carton sealing applications and is the lowest cost pressure sensitive tape available. Hot melt will yellow with time, but will do so more slowly than natural rubber tape.

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